Finding the Fourth Proportional to 3,643.12, 5,456.55 and 3,168.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,643.12 : 5,456.55 = 3,168.52 : x
2. Step 2: Convert to fraction form
   3,643.12/5,456.55 = 3,168.52/x
3. Step 3: Cross multiply
   3,643.12x = 5,456.55 × 3,168.52
4. Step 4: Simplify right side
   3,643.12x = 17,289,187.81
5. Step 5: Solve for x
   x = 17,289,187.81/3,643.12
6. Step 6: Final answer
   x = 4,745.71